1985-02-01

The Development of Vapor Permeation Cure (VPC) and Vapor Injection Cure (VIC) Coatings for RIM and SMC Substrates 850321

Vapor Permeation Cure (VPC) and Vapor Injection Cure (VIC)are foundary resin systems which are built upon polyurethane components which cure almost instantly in the presence of a gaseous tertiary amine catalyst. These processes reduce the amount of time and energy needed to cure foundary cores and molds.This paper reviews the development of VPC/VIC systems, and examines the chemistry, the processes, and the properties involved. Advantages of VPC/VIC coatings are also reviewed, including those in the areas of heat-sensitive plastic substrates and increased productivity.

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